High levels of nitrate occur in the Midwest because of the heavy use of fertilizers.
因为大量使用化肥,中西部地区的硝酸盐含量很高。
Ownership is not clear because of expropriations in the Nazi era.
所有权因纳粹时期的征收而不明。
He resigned largely because of the stories in the press.
他的辞职多半是因为新闻界的一些报道。
The vote was delayed in part because of the death of longtime Senator Robert Byrd, a Democrat from West Virginia.
VOA: special.2010.07.02
So it goes back many hundreds of years but it's in rapid change now because of information technology.
因此经纪业已经有好几百年的历史,如今借助信息科技的发展,而迅速得到发展
I'm usually out early in the morning when it's still dark now because of the changing in the season.
我通常早上很早就出门,因为季节变换,那时天还是黑的。
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